| 不同糙面类型管道沿程阻力系数计算方法研究 |
| |
| 引用本文： | 李占松,张宽,冀前锋.不同糙面类型管道沿程阻力系数计算方法研究[J].水电能源科学,2020,38(5):63-65. |
| |
| 作者姓名： | 李占松 张宽 冀前锋 |
| |
| 作者单位： | 郑州大学水利科学与工程学院,河南郑州450001;四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065 |
| |
| 摘 要： | 在紊流过渡区,自然工业糙面与人工均匀糙面沿程阻力系数的变化规律差异明显,目前尚无适用于计算各类糙面沿程阻力系数的统一公式。在既有研究基础上,通过对人工均匀糙面沿程阻力系数变化曲线数字化,并引入壁面粗糙均匀度的概念,最终建立了适用于各类糙面及紊流各分区计算沿程阻力系数的统一公式。
|
| 关 键 词： | 人工均匀糙面 曲线数字化 沿程阻力系数 壁面粗糙均匀度 |
Study on Calculation Method of Frictional Resistance Coefficient of Pipeline with Different Rough Surface Types |
| |
| LI Zhan-song,ZHANG Kuan,JI Qian-feng.Study on Calculation Method of Frictional Resistance Coefficient of Pipeline with Different Rough Surface Types[J].International Journal Hydroelectric Energy,2020,38(5):63-65. |
| |
| Authors: | LI Zhan-song ZHANG Kuan JI Qian-feng |
| |
| Affiliation: | (School of Water Conservancy and Engineering,Zhengzhou University,Zhengzhou 450001,China;State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,China) |
| |
| Abstract: | In the turbulent transition zone,there are obvious differences in the variation of the coefficient of friction resistance between natural industrial rough surface and artificial uniform rough surface.There is no unified formula that can be applied to all kinds of rough surfaces at present.By digitizing the variation curve of frictional resistance coefficient in artificial uniform rough surface and introducing the concept of rough wall evenness,the unified formula which can be suitable for all kinds of rough surfaces was established. |
| |
| Keywords: | artificial uniform rough surface curve digitization frictional resistance coefficient rough wall evenness |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
